EP 4061891 A1 20220928 - ELECTRODEPOSITION COATING MATERIAL CONTAINING CATECHOL DERIVATIVES AS ANTICORROSION AGENTS
Title (en)
ELECTRODEPOSITION COATING MATERIAL CONTAINING CATECHOL DERIVATIVES AS ANTICORROSION AGENTS
Title (de)
ELEKTROTAUCHLACKBESCHICHTUNGSMATERIAL MIT CATECHOLDERIVATEN ALS KORROSIONSSCHUTZMITTEL
Title (fr)
MATÉRIAU DE REVÊTEMENT D'ÉLECTRODÉPOSITION CONTENANT DES DÉRIVÉS DE CATÉCHOL EN TANT QU'AGENTS ANTICORROSION
Publication
Application
Priority
- EP 19210956 A 20191122
- EP 2020082692 W 20201119
Abstract (en)
[origin: WO2021099469A1] The present invention relates to an electrodepositable coating material comprising one or more cathodically electrodepositable resins (A); one or more crosslinking agents (B); and one or more compounds represented by formula (I) wherein R1= H or OH; R2= a divalent radical selected from the group consisting of *C(O)-O, (HO)*CH-CH2 or *CH2-CH2, with * denoting the carbon atom which is bound to the benzene ring; and R3= a monovalent radical selected from the group consisting of NH2, (H3N+) X-, NHR4, (+NH2R4) X-, or R4, wherein X is the anion of an organic or inorganic acid and R4 a linear or branched alkyl group having 1 to 6 carbon atoms. A further object of the present invention is a method of coating a metallic substrate comprising the steps of dipping a metallic substrate into an electrodeposition bath containing the electrodepositable coating material of the present invention; switching the substrate as a cathode; depositing the electrodepositable coating material onto the substrate to form a coating layer; and drying and curing the thus formed coating layer. Further objects of the invention are the use of compounds of formula (I) as anticorrosion agents in electrodeposition paints and coated substrates, coated according to the method of the invention.
IPC 8 full level
C09D 5/44 (2006.01)
CPC (source: EP US)
C09D 5/4411 (2013.01 - EP US); C09D 5/4434 (2013.01 - EP US); C09D 5/4492 (2013.01 - EP US); C09D 5/4496 (2013.01 - EP US); C25D 13/08 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021099469 A1 20210527; CN 114729208 A 20220708; EP 4061891 A1 20220928; JP 2023503134 A 20230126; JP 7395741 B2 20231211; MX 2022006150 A 20220617; US 2023002624 A1 20230105
DOCDB simple family (application)
EP 2020082692 W 20201119; CN 202080080851 A 20201119; EP 20807412 A 20201119; JP 2022529845 A 20201119; MX 2022006150 A 20201119; US 202017778483 A 20201119